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CVE-2020-35125

28
FAUCET Score

CVE-2020-35125 is a critical cross-site scripting (XSS) vulnerability affecting Mautic versions prior to 3.2.4, specifically within its forms component. This flaw allows remote attackers to inject malicious JavaScript through the mautic[return] parameter, leveraging a different attack method related to the Referer concept than a related CVE. With a CVSS score of 9.6 (Critical), it presents a high risk due to its network-based attack vector, low attack complexity, and potential for complete compromise of confidentiality, integrity, and availability. While no active exploitation, public exploit code, or significant community discussion has been observed, organizations using affected Mautic versions should prioritize patching.

Impacted Technologies

VendorProductVersion(s)CPE
< 2.16.5CPE matchmatch criteria
cpe:2.3:a:acquia:mautic:*:*:*:*:*:*:*:*
>= 3.0.0, < 3.2.4CPE matchmatch criteria
cpe:2.3:a:acquia:mautic:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

9.6CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
2.8
Impact Score
6.0
CvssVersion
3.1

Exploit Intelligence

EPSS Score
2.69%
Probability of exploitation in next 30 days
EPSS Percentile
84.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0269 is in the 88th percentile among its peer group of 834 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.8 Bluesky, 0.5 Mastodon, and 1.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.1 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (3)

composerpatch availablevia ghsa
Product: mautic/coreFixed in: 2.16.5
composerpatch availablevia ghsa
Product: mautic/coreFixed in: 3.2.4
github_advisorypatch availablevia nvd_reference
View patch

Vendor Advisories (1)

composerGHSA-42q7-95j7-w62mcritical

Mautic is vulnerable to XSS vulnerability

May 15, 2024

References

forum.mautic.org / c/announcements/16
Vendor Advisory
github.com / mautic/mautic/security/advisories/GHSA-42q7-95j7-w62m
PatchThird Party Advisory
horizon3.ai / disclosures/mautic-unauth-xss-to-rce
ExploitTechnical DescriptionThird Party Advisory
mautic.org / blog/community/security-release-all-versions-mautic-prior-2-16-5-and-3-2-4
Release NotesVendor Advisory